1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _SCSI_SCSI_EH_H
3*4882a593Smuzhiyun #define _SCSI_SCSI_EH_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include <linux/scatterlist.h>
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <scsi/scsi_cmnd.h>
8*4882a593Smuzhiyun #include <scsi/scsi_common.h>
9*4882a593Smuzhiyun struct scsi_device;
10*4882a593Smuzhiyun struct Scsi_Host;
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun extern void scsi_eh_finish_cmd(struct scsi_cmnd *scmd,
13*4882a593Smuzhiyun struct list_head *done_q);
14*4882a593Smuzhiyun extern void scsi_eh_flush_done_q(struct list_head *done_q);
15*4882a593Smuzhiyun extern void scsi_report_bus_reset(struct Scsi_Host *, int);
16*4882a593Smuzhiyun extern void scsi_report_device_reset(struct Scsi_Host *, int, int);
17*4882a593Smuzhiyun extern int scsi_block_when_processing_errors(struct scsi_device *);
18*4882a593Smuzhiyun extern bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,
19*4882a593Smuzhiyun struct scsi_sense_hdr *sshdr);
20*4882a593Smuzhiyun extern int scsi_check_sense(struct scsi_cmnd *);
21*4882a593Smuzhiyun
scsi_sense_is_deferred(const struct scsi_sense_hdr * sshdr)22*4882a593Smuzhiyun static inline bool scsi_sense_is_deferred(const struct scsi_sense_hdr *sshdr)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun return ((sshdr->response_code >= 0x70) && (sshdr->response_code & 1));
25*4882a593Smuzhiyun }
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun extern bool scsi_get_sense_info_fld(const u8 *sense_buffer, int sb_len,
28*4882a593Smuzhiyun u64 *info_out);
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun extern int scsi_ioctl_reset(struct scsi_device *, int __user *);
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun struct scsi_eh_save {
33*4882a593Smuzhiyun /* saved state */
34*4882a593Smuzhiyun int result;
35*4882a593Smuzhiyun unsigned int resid_len;
36*4882a593Smuzhiyun int eh_eflags;
37*4882a593Smuzhiyun enum dma_data_direction data_direction;
38*4882a593Smuzhiyun unsigned underflow;
39*4882a593Smuzhiyun unsigned char cmd_len;
40*4882a593Smuzhiyun unsigned char prot_op;
41*4882a593Smuzhiyun unsigned char *cmnd;
42*4882a593Smuzhiyun struct scsi_data_buffer sdb;
43*4882a593Smuzhiyun /* new command support */
44*4882a593Smuzhiyun unsigned char eh_cmnd[BLK_MAX_CDB];
45*4882a593Smuzhiyun struct scatterlist sense_sgl;
46*4882a593Smuzhiyun };
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,
49*4882a593Smuzhiyun struct scsi_eh_save *ses, unsigned char *cmnd,
50*4882a593Smuzhiyun int cmnd_size, unsigned sense_bytes);
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd,
53*4882a593Smuzhiyun struct scsi_eh_save *ses);
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun #endif /* _SCSI_SCSI_EH_H */
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